Meat bird or leghorn chick???

hi all. I have two week old chicks. I ordered one leghorn. It is significantly larger than the rest of the chicks. It often seems winded (out of breath) and is not as active as the rest.
I looked at pics of both, but still cannot tell.
I will submit pictures later.

Are leghorn chicks typically larger than other breeds? The rest are Rhode Island reds, arucana, Wyandotte and comets.

It does sound like you have a Cornish X meat bird from what you say. They aren't very active, and literally live to eat, and they will definitely outgrow other chicks. When you get the picture posted I'll be able to tell for sure.

Should I let the farm store know? Or is it one of those things there is a chance you may not get what you order? We have no desire for a meat bird (we get attached to our chickens). She is here and can stay but I was just talking about meat birds with friends and they said they will just eat themselves to death. Is this the case? Will it not survive long or do well with the others?

There are people who try to keep them as pets but I'm pretty sure you'd need to restrict feed for it to survive. And even then, the chances of a quality life aren't great. If you can't bring yourself to process, I'd let someone else have it for their dinner table.